Blowpipe.



PATENTED APR. 16, 1907.

G. W.. HOPKINS.

'BLOWJPIPBI VAPPLICATION FILED SEPT. 28,1906A :n: mwen/@5.

m @uw (UNITED PATENT ormoni GEORGE WT HOPKINS, OF CLEVELAND, OHIO. v

Specification of-Letters Patent.

ratenteaaprn 16,1907t Application ledeptember 28, 1.906.A Serial No. 336.623. l

To all whbmt may concern:

Be it known that I, GEORGE W. HOPKINS, residing at Cleveland, inthe county of Cuyahoga and State of Ohio, have invented cer- 'tain new and useful Improvements in Blowpipes, ofvwhich the following is a full, clear, and exact description, reference being had to l the .accompanying drawings.

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"It has been found' in practice generally that fin order to produce'perfect combustion-in an acetylene-burner it is necessary that the'. mix'- g tur'eshould be heated or cool, as the case may Ato apoint wherea deposit of arbononthe L5 parts' is prevented and complete combustion be, tobring the temperature of uch mixture l. is brought about and' then to maintain such 'temperature throughout thel 'entire opera-v tion.

f l' It has been found the use of acetylenegas that it deeomposes at a comparatively low ternperature6009 Fahrenheit, 'for example-andblowpipe-burne'rs, used for welding,

are required to stand a temperaturein the v1- cinity of. 3,000"Fahreriheitcf ,In fact, it has been found in practice that'bl'owpipe-burners of ordinary construction which are notprovided with some cooling'means decompose and change the nature 'of the Iacetylene gas, prevent proper combustion, and producey .aJ de' posit of carbon withinffthev blowpi e or burner due to such decc'mposition'van vlackl I df proper combustion. 4

It is the ob'ect of this inventionytherefore,

- to provide a burner for blwpipes and' the any gas suitable means for`supp1y like for use with the acetylene ggas andwhich is provided 'with suitable means for retaining the temperature of the gas and of theparts of the burner at a point'suchl that decom osition and depositing of carbon isy 'ren impossible. f

lt is also a part of this invention t in conjunction with any burner f vsefwith M ahot/or cold medium to`-v produce 'a proper-combustion..

More specifically, theV` inve11-ti lmf jcontem-l plates the use of suitable air andf-igaspi'pes which copera'tewith a mixer vandv burner?,

tube to produce the required' fianl'e, together with.' a jacket, preferably a lwater-jacketf. adapted to receive hot or cold water .for :af-. fecting the parts to bring aboutfthe proper tem craturefor such partsin producing the com ustion required. v

, p Still more specific-ally, I employv a gasjpipe ered arrange its forward .end. This head, 10 is and air-pipe connected to a mixer adapted to Vsupply the mingled air and gas to a burner# tube and inl connection with such parts a water-jacket provided with means for supl `to de 'ver cold water to the-jacket and retain the re uired temperat efor proper combustion, wlhile, on the othdiI-hand," if' the gas used `requires a high temperature for proper combustion then the2 thermostat may be setlto automatically supply-hot, and cold water to the jacket to l bring about the required temperature for thissgas also.

Theinvention may be further briefly-sumimarized as consisting in theconstruction and combination of parts hereinafterset forth -in thefollqwingdescription, drawings, and

claims.' l A Referring tothe drawings, Figure 1 isatop' plan view, partially broken away, showrespect to eachv other. `Fig. 2l is a section $011 the line 2 2 of Figa 1 looking-.tothe left.

1g. 3 is a sectionupon th line 3 3 looking to the left, and Fig. l is adetailedsectional view of a 'three-way valve for controlling the A water-supply.

In' carrymg out my invention any pre ferr-:ed form and constructionof blowpl e an shown one'form inthe drawings which meets vthe re uirements withy great efficiency, and in suc embodiment 1- represents a head which isprovidedvwith Starling-boxe 2- and 3 for receiving the air-admission pi e 4'and'the gas-admission pipe 5, `each of w "ch is -pro' 6 andvalve `6. The head lis provided/wit a angeY, adaptfedl to receive a jacket 8, provided with cooling-flanges 9 and having at itsforward end ,ing all of the parts vin their relationship with water-jacket maybe employed; but have TOO,

another head 1.0,- which closesthejacket at` plrovided 'ch the with an openingdl, A throgh w a spring 14, secured to a bracket 14".

burner projects. Thejacket isfurther Y'pro- 1 vided with a water-outlet 12 and with awater-inlet 13, connected to a three-way valve 14, provided with a'cold-water inlet 15 and ae hot-water inlet 16. An operating-lever 17 is arranged for this valve, and it is preferably held. in the position shown in Figs. 1 and 'Llby ns lever 17 is provided with a swiveled block 17', having an opening for receiving an arm' 1S, connected to a bar 19,-of frutta-percha orr other Suitable material whic 1 is capableof serving as a thcrmostaticdevice. A nut 19 on the threaded end of the arm 18 is adapted. to engage the swiveled block 17l and shift the valvelever 17 against the tension of its spring. This bar 1 9 is secured to the jacket 8 at its rear end. From the arrangement of 'parts connected to the operating-lever 17 and the valve 14 it will be seen that any ychange in the temperature of the Watermunicating, respective jacket and its parts will bring about a shifting of the valve 14 and will cause such valve to admit hot or'cold water, as the case may be.

In normal position the valve 14 is set to deliver through tlieport 16 hot water, and upon the expansion of the bar -19 the valve 14 will shut oli' this hot water and admit cold water through the port 15 to the jacket, in which case the'parts within the same will be kept at a low temperature. If it is desirable to raise the point at whichthe cold water comes, then the nut 1Ql is vshifted on the arm 18, so that the thermostatic bar 19 will -have a greater movement before it operates the va ve 14. Within the water-jacket 8 and secured to the forward end thereoic is a burner-tubcQO, having a flange 21, provided with threaded o enin s for receiving screws 22, passing t roug o enings in the head 10. j This tube 20 has a tlireaded opening 23 for receiving a burner-nozzle 24 of any preferred size and construction. This tube 1s further provided with projections 25 forjenga ement with the inner wall ofthe water-jac (et to hold the tube in yplaceand also with an annular shoulder 26 at the rear end thereof for receiving the flange 27 of a hollowmixing-cone 28 and with a threaded cylindrical part 29 for re. ceiving a member 3Q, provided with openings 31 for'receiving the air and gas 'pipes 4 and 5 arid with suitableorts 32 and-33, comy, with nozzles 34 and 35. These nozzles 34 and 35 are preferably arranged in a manner such that they will project their streams toward each other and within the mixing-cone 28. 'Y I The mixing-cone 28 is arranged internally with annulanridges. 28 for the purpose of balling and mixing`the air-and gas. and With ports 28, which permit the mixture to ilo mto the burner-tube 20.

It has been found in practice that the arrangement of a mixing-cone With'annular i l r r composition of the gas.

ridges such as described, together with air and gasnozzles which project their streams toward each other,` furnishes a mixture. ol gas and 'air which is highly ellicient for complete combusiton-and that 'the varying pressures in the gas and the air have less tendency to all'ect such perfect combustion.

When the device is used with acetylene, a `su'flicient quantity of such gas and air is ad- .mi'tted to the mixer. to pro;.uce the ila-lne rcquired at the-burner, and when the radiation of the heat trom such flame angl also the heat prouccfl by the heating up of the. parts due to the heat 'radiated from the work 1n actual practice that the parts do not elog or carhonize m any wa)r and that perfect combustion is brought about at all times.

W hen gases are use l which would give better combustion if the mixture. were heated iu the initial start-ing or, in fact, even after the device is under way, then the nut 19 is adjusted so that the temperature of the parts is raised by permitting the hot water to 'flow into the jacket until the thermostat has .shifted the valve or until the point in temperature lor perfectcombnstion of this particular gas being used has been reached .l

'lhc arm 18 may have .a flat side 18. lor graduation for giidance in adjusting the nut 19.

Having described my inventionfI claim- 1. In an acetylene-burner, in combination,

means for supplying a mixture of gases to said burner, and means for cooling such mix' ture to prevent/the decomposition of the acetylene gas. 4 j

2.' In an acetylene-burner, in combination, means for supplying a mixture of gases to sai-il burner and a Water-jacket for cooling suclrmixture to prevent decomposition of the acetyleneg'as. M

3. In .anI acetylene-blowpipe, in combination, a burner, means for supplying a mixture of gases to said' burner, and means for cooling the same to prevent decomposition of the gas.

4. In an acetylene-blowpipe, in combination, a burner, means for supplying a mixture of gases to saiil burner, and a jacket for varying the temperature thereof to prevent. ele- 5. In an' acetylene-burner, in combination, means for supplying a mixture of gases to said burner, Vand a jacket adapted to be suprio ' burner-tube, a hollow with openings for the exit of the mixture and being closed'at the apex, a gas! let nozzle, and an air-inlet nozzle, sai n zles being.

ter-jacket for said i i v n n y 7. In au acetylene-burner, in combination,

means for supplying a mixture of gases to said burner, and means for automatically supplyinga medium for retainingfthe temperature of the mixture'and of the parts of said burner below the point of decomposition of the acetylene gas.

8. In an acetyleneeburner, in combination, i

means for supplying 4a mixture of gases to said burner; and means forv retaining the parts ofsaid. burner temperature irrespective .of the eect of the heat radiating from the flame produced by said burner.

9. In a burner, in-combination, means for supplying a mixture of gases thereto,v a waburner, and means for supplying hot and cold water to said jacket.

10. In an` acetylene-burner, in`combination, a burner, a mixei for said burner, means for supplying 'air and'gas to saidmixer, a water-jacket surrounding said parts, and'means for supplying water-to said jacket.

j 11. In an acetylene-burner, in combina'- tion, a burner-tube, a mixer for said tube,

means for y supplying air and gas to said .mixen a water-jacket for said parts, means for sup lying water to said jacket, and means contro led by the temperature about said. parts for regulating the 'flow of water to said jacket. l

12. In an acetylene-burner, in combination, a burner-tube, a mixer mounted within the same, means iicr supplying air and gas to said mixer, a water-jacket surrounding' said burner-tube, means forsupplying water tof said jacket, a water-supply pipe, a valve controlling said supply, trolling said valve.

13. In 'a blowpipe, in combination,V a burner-tube, a mixer carried thereby, a gassupply, an air-supply, a jacket inclosing all of said parts, said pipe, an operating and a thermostatic bar valve, whereby the and a thermostat for conevice for said valve, Jfor operating said 414. In' a blowpipe, in combinatiomja mixing-cone carried by said* burner-tube, said cone being provided adapted to project their streams into 'said mixin -cone. e 15. n a blowpipe, in combination, a

a water-.su ply pipe, a valve in expansion of' said bar will 'shift said valve to admit water to said`j-acket.

at substantially a iixedv toward a common point ltoward said burner, said mixing-cone provided internally with annular ridges and charge-openings near der, a hollow mixing-cone burner-tube, ahollow mixing-cone mounted therein and lhaving itsapex closed and extending toward the discharge end of said burner-tube, a member provided with a gasa'dmission nozzle and an air-admission nozzle, both of which .project their streams cone, and means Jfor supplying air and gas to said air and gas nozzles.

'16. In an .acetylene-burner, in combination,` a liurner-tube, la hollow mixing-cone having its apex toward the opening in said burner-tube and provided internally with annular ridges near the-base thereof, anair-nozzle, a gasnozzle, said nozzles beingadapted to project their streams into said mixing-cone toward the apex thereof,".and means for supplying air and gas to said nozzles.

17. In an acetylene burner, 4in combination, a burner-tubev having an annular shoulder, a mixing-cone abutting against aid shoul-` der and provided with interna annular ridges and dischargeaopenings near the basethereof, a member secured 1n said burnertubeand holding said mixing-cone in place,

zle and an air-nozzle, both of which are adapted to project theirstreams within-said cone and toward the apex thereof, and means for suplying air and gas to said nozzles.

18. n an acetylene-burner, in combination, a burnentube having a burner mounted therein at one end, a hollow mixing-cone secured at the other end and having its apex being near its base with discharge-openings, a member secured in said burner-tube and holding said cone place, a gas-nozzle carried by said member, an air-nozzle carried by said member, said nozzles converge their streams within said hollow cone, anair-supply pipe for said member, and a assuppl T pipe lor said member.

19. n an acetylene-blowpipe,`in combination, a burner-tube, a conical-shaped mixer within said mixing-- andwith discharge-openings,

being adapted to said member being provided with a gas-noz- ICO IIO

mounted in said burner-tubeu and having inand also having disthe base thereof said mixer-"being hollow and closed at-the apex, airand gas nozzles adapted to Ilco'nverge their streams within said mixer, means for supplying air and gas to said nozzles, a waterternal annular ridges jacket for said parts, and means for supply-- ing`wat'er to'said jacket..

20.- In an acetylene-blowpipe, in combination, a burner, -means tor supplying a-mixture of gases to said burner, a water-jacket for said'burner, and cooling-ribs mounted upon said jacket. f

21. In a` blowpipe, in combination, a burner-tube provided with an annular shoultoward the opening in said burner-tube'jfaiid having its apex ISO provided internally with annular ridges and f 22. In a blowpipe, in combination, a at, its base with discharge-openings, a rnernl burner, pipes for supplying air and gas to'said ber secured in said burner-tube tor holding burner, and a jacket surrounding said burner said mixing-cone in place, `a gas-nozzle carand said' pipes and having a sliding connec- 5 tried by said member,- an air-nozzle carried tion between it and said pipes to permit eX- by said member, pipes secured in said meni- -pansion and contraction of said jacket.

ber for supplying air and gas to their respeca In testimonyr WhereolL I aHiX my signature tive nozzles, a jacket-head secured to .said l in 'the presence of two Witnesses. burner-tube, another jacket-head provided GEORGE W HOPKINS.

lo with stuffing-boxes about said air and gas Witnesses: Y

pipes, a jacket mounted between said head, V. L. FISHER,

and means for supplying Water to said j aoket. j B. W. BROCKETT. 

